Quetiapine in Specific Phobia (QUISS)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00872716
Recruitment Status : Completed
First Posted : March 31, 2009
Last Update Posted : March 31, 2011
Information provided by:
University Hospital Muenster

March 30, 2009
March 31, 2009
March 31, 2011
April 2009
March 2011   (Final data collection date for primary outcome measure)
VAS-Anxiety [ Time Frame: on study day ]
Same as current
Complete list of historical versions of study NCT00872716 on Archive Site
  • State-Trait-Anxiety-Inventory (STAI) [ Time Frame: on study day ]
  • Beck Anxiety Inventory (BAI) [ Time Frame: on study day ]
  • Phobia specific questionnaire [ Time Frame: on study day ]
  • Acute Panic Inventory (API) [ Time Frame: on study day ]
  • Profile of Mood States (POMS) [ Time Frame: on study day ]
  • VAS-Avoidance [ Time Frame: on study day ]
  • VAS-Tension [ Time Frame: on study day ]
  • VAS-Sedation [ Time Frame: on study day ]
  • amygdala reactivity [ Time Frame: on study day ]
Same as current
Not Provided
Not Provided
Quetiapine in Specific Phobia
Anxiolytic Effects of Single-dose Quetiapine XR Administration on Clinical Symptoms and Amygdala Activation During Exposure in Patients With Simple Phobia
The study hypothesis is that quetiapine XR has anxiolytic properties. The study aims to investigate the putative anxiolytic properties of quetiapine XR in patients with anxiety disorders. Therefore, in a proof-of-concept design patients with simple phobia will be selected to investigate specific anxiolytic and antipanic activity during acute anxiety. Moreover, in a combined fMRI/visual stimulus presentation paradigm activity of fear-network associated brain structures such as the amygdala will be investigated under treatment with quetiapine XR or placebo. Additionally, genetic factors potentially mediating anxiolytic properties of quetiapine will be studied.
Not Provided
Phase 2
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Specific Phobia
  • Drug: Quetiapine XR
    100 mg single-dose Quetiapine XR
    Other Names:
    • - Seroquel XR
    • - Seroquel Prolong
    • - ATC-Code: N05A H04
  • Other: Placebo
    Other Name: no other name
  • Experimental: Quetiapine XR
    100 mg single-dose Quetiapine XR
    Intervention: Drug: Quetiapine XR
  • Placebo Comparator: Placebo
    Intervention: Other: Placebo
Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Same as current
March 2011
March 2011   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Provision of written informed consent
  • A diagnosis of simple phobia by Diagnostic and Statistical Manual of Mental Disorders-Fourth Edition (DSM-IV)
  • Females or males aged 18 to 70 years
  • Females of childbearing potential must have a negative serum pregnancy test within 7 days prior or at enrolment and be willing to use an effective method of birth control for the duration of the study. Effective methods of birth control are defined as those which result in a low failure rate (i.e. pearl-index < 1%) when used consistently and correctly such as: a hormonal oral, transdermal, or injectable contraceptive agent with a double-barrier method; an implantable contraceptive device with a failure rate less than 1% for at least 3 months prior to enrolment; vasectomized partner
  • Able to understand and comply with the requirements of the study

Exclusion Criteria:

  • Pregnancy or lactation
  • Any DSM-IV Axis I disorder not defined in the inclusion criteria
  • Patients who, in the opinion of the investigator, pose an imminent risk of suicide or a danger to self or others
  • Known intolerance or lack of response to quetiapine fumarate as judged by the investigator
  • Use of any of the following cytochrome P450 3A4 inhibitors in the 14 days preceding enrolment including but not limited to: ketoconazole, itraconazole, fluconazole, erythromycin, clarithromycin, troleandomycin, indinavir, nelfinavir, ritonavir, fluvoxamine and saquinavir
  • Use of any of the following cytochrome P450 3A4 inducers in the 14 days preceding enrolment including but not limited to: phenytoin, carbamazepine, barbiturates, rifampin, St. John's Wort, and glucocorticoids
  • Administration of a depot antipsychotic injection within one dosing interval (for the depot) before randomization
  • Substance or alcohol dependence at enrolment (except dependence in full remission, and except for caffeine or nicotine dependence), as defined by DSM-IV criteria
  • Opiates, amphetamine, barbiturate, cocaine, cannabis, or hallucinogen abuse by DSM-IV criteria within 4 weeks prior to enrolment
  • Medical conditions that would affect absorption, distribution, metabolism, or excretion of study treatment
  • Unstable or inadequately treated medical illness (e.g. congestive heart failure, angina pectoris, hypertension) as judged by the investigator
  • Involvement in the planning and conduct of the study
  • Previous enrolment or randomization of treatment in the present study.
  • Participation in another drug trial within 4 weeks prior enrolment into this study or longer in accordance with local requirements
  • A patient with Diabetes Mellitus (DM) fulfilling one of the following criteria: Unstable DM defined as enrolment glycosylated hemoglobin (HbA1c) >8.5%; Admitted to hospital for treatment of DM or DM related illness in past 12 weeks; Not under physician care for DM; Physician responsible for patient's DM care has not indicated that patient's DM is controlled; Physician responsible for patient's DM care has not approved patient's participation in the study; Has not been on the same dose of oral hypoglycaemic drug(s) and/or diet for the 4 weeks prior to randomization. For thiazolidinediones (glitazones) this period should not be less than 8 Weeks; Taking insulin, if the daily dose on one occasion in the past 4 weeks has been more than 10% above or below their mean dose in the preceding 4 weeks. Note: If a diabetic patient meets one of these criteria, the patient is to be excluded even if the treating physician believes that the patient is stable and can participate in the study.
  • An absolute neutrophil count (ANC) of <= 1.5 x 109 per liter
  • Exclusion criteria for magnetic resonance imaging procedures: cardiac pacemaker or defibrillator; injured by a metallic object that was NOT removed; cochlear (ear) implants; surgery involving a metallic implant (e.g. knee replacement); weight more than 300 lbs/136 kg (weight limit for scanner bed); Intra-Uterine Device (IUD); claustrophobia.
Sexes Eligible for Study: All
18 Years to 70 Years   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
EudraCT-Nr: 2008-001371-30
Not Provided
Not Provided
Prof. Dr. med. P. Zwanzger, University Hospital Muenster
University Hospital Muenster
Principal Investigator: Peter M Zwanzger, Prof Dr med University Hospital Muenster
University Hospital Muenster
March 2011

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP